A piece of pipe has an outer radius of 4.5cm, an inner radius of 2.8cm and length of 36cm
The density of the pipe is 7.8 g/cm^3
What is the mass of this pipe? Answer is in unites of kg.
The Attempt at a Solution
I subtracted the volume of the hollow inside of the tube from the large radius (2.8+4.5cm) and multiplied that by the density given. Then I converted to kg by dividing by 1000. My answer came up to be appx 40 kg. But I believe I'm wrong.